Air compressor



FIG. 1 is a front perspective view showing our new design;

FIG. 2 is a right hand side view thereof;

FIG. 3 is a left hand side view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

It being understood that the broken lines are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for an air compressor, as shown. 